CN101670627A - Mould structure with conformal cooling pipe - Google Patents

Mould structure with conformal cooling pipe Download PDF

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Publication number
CN101670627A
CN101670627A CN200910108920A CN200910108920A CN101670627A CN 101670627 A CN101670627 A CN 101670627A CN 200910108920 A CN200910108920 A CN 200910108920A CN 200910108920 A CN200910108920 A CN 200910108920A CN 101670627 A CN101670627 A CN 101670627A
Authority
CN
China
Prior art keywords
mould
cooling pipe
conformal cooling
conformal
filling block
Prior art date
Application number
CN200910108920A
Other languages
Chinese (zh)
Inventor
刘锦辉
赵灿
陈继兵
李瑞迪
Original Assignee
黑龙江科技学院
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Application filed by 黑龙江科技学院 filed Critical 黑龙江科技学院
Priority to CN200910108920A priority Critical patent/CN101670627A/en
Publication of CN101670627A publication Critical patent/CN101670627A/en

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Abstract

The invention relates to a mould structure with a conformal cooling pipe, aiming at solving the technical problems of the space three-dimensional curve direction setting of a cooling runner in a mouldand application of the mould to the processing requirement of a laser melting and forming method. The technical scheme is adopted as follows: a mould body is formed by a mould external contour shelland a casted compact filling block which is internally provided with a mould conformal cooling pipe with an axial line of space three-dimensional curve that is conformally designed according to the shape of a mould-shaped cavity; and the compact filling block is casted in the mould external contour shell. The mould structure has the advantages that the mould external contour shell can be manufactured by adopting a selective laser melting and forming method; the axial line of the cooling runner is arranged in the space three-dimensional curve direction according to the mould-shaped cavity; themould cooling efficiency is high; the service life of the mould is long; and a casting process with low processing cost is adopted by the compact filling block so as to reduce manufacturing cost and period of the mould.

Description

A kind of mould structure with conformal cooling pipe

Affiliated technical field

The present invention relates to a kind of mould structure, particularly a kind of laser that is applicable to dissolves moulding process and casting of metals technology in conjunction with a kind of mould structure with conformal cooling pipe of making.

Background technology

Technology of die manufacturing is one of most widely used technology in the current manufacturing industry, cooling pipe is set on mould, by ducted recirculated water mould being cooled off is the most simple and efficient method of mold cools down, and the cooling system of mould has material impact to life-span, production efficiency of products and the quality of mould.Particularly more apparent it is important for the cooling system of the large mold of die cavity complexity.The conventional method of mould manufacturing is: to metal blank carry out car, mill, processing such as plane, brill, mill, galvanic corrosion, thereby obtain required mold shape and size.Said method still difficulty processes the endoporus that track is a three-dimensional curve in metal blank, therefore, the coolant flow channel of the mould of conventional method manufacturing generally all is made up of one group of straight perforate system, for forming the stream of sealing, except that import and outlet, other perforate need seal with plug.There is following problem in this cooling technology: at first, the setting of coolant flow channel is subject to processing process limitation and can't realizes needing to be provided with by design, and cooling effectiveness is low, and cooling effect is poor.Because the shape chamber of mould is generally all very complicated, the cooling system that straight hole system forms can't guarantee that the die cavity each several part evenly cools off, and product easily causes distortion because of inhomogeneous cooling is even.Secondly, the processing technology complexity, the hole ties up to when mould is made and need process, and needs to block up with plug when molding.Because the shortage of the limitation of means and suitable cooling water channel design theory in the die manufacture, the design of cooling water channel at present still is confined under the relative simple version with making, therefore in mould is made, how to solve and by designing requirement coolant flow channel is set arbitrarily in mould and reaches that to improve the instructions for use that cooling effectiveness satisfies mould be the technical problem that the industry needs to be resolved hurrily.

The selective laser forming technique selects for use pressed powder as dissolving or the sinter molding material, mfg. moulding die is advanced technology of die manufacturing, progressively to promote the use of, it is wide that this technology has moulding material, manufacture process is not subjected to the influence of part complexity, manufacturing efficient height, the characteristics that cost is low, its operation principle is; Generate the cad model of entity at first on computers, generate stl file through slicing treatment again, utilize computer control laser successively to be shaped, dissolve or the sinter molding material after being layering, finally formed required prototype or part.

Selective laser dissolves forming technique (Selective Laser Melting, SLM) pressed powder with moulding uses material extensive, with low cost, but because the workpiece that dissolves after the forming method moulding has bigger internal stress, and remove difficulties, crackle and distortion easily take place in the workpiece bigger for volume, directly make the large mold prior art and also can't solve this technological deficiency so selective laser dissolves forming method.

(Selective Laser Sintering SLS), mainly uses two kinds of methods to selective laser sintering and moulding technology.First method is with high power laser straight forming mould, studying the most successful is the EOS company of Germany, its material has DirectMetal100, DirectMetal50, DirectMetal20, DirectSteel150-VI, DirectSteel120-VI (material trade mark) etc., the hot strength of the mould of manufacturing can reach 491MPa.Another kind then utilizes low-power laser indirect forming mould, studying the most successful is the DTM company of the U.S., its material has RapidSteel 1.0, RapidSteel 2.0, LaserForm ST-100, LaserFormST-200, LaserForm A6 (material trade mark) etc., these materials mainly all are to be used for making injection mould, and the injection mold intensity of its manufacturing can reach more than the 587MPa, and the life-span of injection mould has reached 100,000/pair.Above-mentioned two class methods all are to adopt special powder, and rely on above-mentioned monotechnics and carry out the monolithic molding of die insert, and forming technology process complexity needs necessary post processing, cost height.

Summary of the invention

For solving the technical problem that endoporus is processed and selective laser dissolves the bigger mould of forming method incompatibility moulding volume that can't realize coolant flow channel space three-dimensional curve in the existing mold manufacturing, the present invention designs a kind of mould structure that has conformal cooling pipe, solving coolant flow channel space three-dimensional curve is provided with problem and utilizes selective laser to dissolve the moulding of forming method mfg. moulding die simple, be not subjected to shape chamber complex limitation, powder for molding plurality of advantages with low cost, the main road improves mold cools down efficient, prolong die life, reduce die manufacturing cost, reduce the goal of the invention of the die manufacturing cycle and the raising mould accuracy of manufacture.

The present invention realizes that the technical scheme that goal of the invention adopts is: a kind of mould structure with conformal cooling pipe, comprise die ontology and cooling pipe, described die ontology is that the fine and close filling block of single metal alloy or metallic element composite and mould outline housing with design wall thickness and single metal or metal alloy employing casting constitutes, being provided with the axis that the shape conformal correspondence in its shape chamber of mould manufactures and designs in fine and close filling block is the mould conformal cooling pipe of space three-dimensional curve, and fine and close filling block casts in the mould outline housing.

Described mould conformal cooling pipe is arranged in the mould structure after being shaped for the moulding canal curvature.Conformal cooling pipe is the irregular network structure that is interconnected.

Described mould outline housing adopts the selective laser method of melt-molding by single metal alloy or the moulding of metallic element composite powder.

The invention has the beneficial effects as follows, mould outline shell structure can adopt the manufacturing of selective laser method of melt-molding, moulding material is wide, cost is low and can adopt different mould outline case materials according to the instructions for use of different moulds, manufacture process is not subjected to the influence of part complexity, make characteristics such as efficient and accuracy of manufacture height, the axis of realizing coolant flow channel in mould is provided with mould shape chamber in the space three-dimensional direction of curve, improved mold cools down efficient, prolong die life, fine and close filling block adopts the casting process of low processing cost, reduces the manufacturing cost and the manufacturing cycle of mould.

The present invention is described in detail below in conjunction with accompanying drawing.

Accompanying drawing is a mould structure schematic diagram of the present invention.

In the accompanying drawing, 1 mould outline housing, the filling block of 2 casting, 3 mould shape chambeies, 4 conformal cooling pipes.

The specific embodiment

Referring to accompanying drawing, a kind of mould structure with conformal cooling pipe, comprise die ontology and cooling pipe, described die ontology is that the fine and close filling block 2 of single metal or metal alloy material and mould outline housing 1 with design wall thickness and single metal or metal alloy employing casting constitutes, being provided with the axis that the shape conformal correspondence in mould shape chamber 3 manufactures and designs in fine and close filling block 2 is the mould conformal cooling pipe 4 of space three-dimensional curve, and fine and close filling block 2 casts in the mould outline housing 1.

Among the present invention, the structural design of mould outline housing 1 is to dissolve moulding (Selective Laser Melting for satisfying selective laser, SLM) technological requirement, the design wall thickness of mould outline housing 1 can satisfy the instructions for use of mould and can satisfy the technological requirement that selective laser dissolves forming technique simultaneously generally at 2-6mm.Material is selected single metal alloy or metallic element composite according to the instructions for use of mould.

Among the present invention, described mould outline housing 1 adopts the mould outline housing of selective laser method of melt-molding by single metal or metal alloy powder compacting.

Among the present invention, single metal or metal alloy adopts the material of the fine and close filling block 2 of casting to select, mainly consider its with the metallurgical junction of mould outline housing 1 material with joint efforts, self casting process, mechanical strength, physical property and heat-conductive characteristic etc.

Among the present invention among the embodiment, described mould conformal cooling pipe 4 is arranged in the mould structure after being shaped for the moulding canal curvature.Conformal cooling pipe 4 bend to shape, mainly be needs according to the mold cools down position, as far as possible conformal cooling pipe 4 is set to the needed cooling of mould position, reach the purpose that improves radiating efficiency.Conformal cooling pipe 4 of the present invention promptly with mould shape chamber 3 conformals, the shape that bends to of conformal cooling pipe 4 should be close with mould shape chamber 3.

For increasing the mould radiating efficiency, among the embodiment, described conformal cooling pipe 4 is the irregular network structure that is interconnected among the present invention.

For guaranteeing the bending process of conformal cooling pipe 4, described conformal cooling pipe 4 is a copper pipe.

Claims (5)

1, a kind of mould structure with conformal cooling pipe, comprise die ontology and cooling pipe, it is characterized in that: described die ontology is that the fine and close filling block (2) of single metal alloy or metallic element composite and mould outline housing (1) with design wall thickness and single metal or metal alloy employing casting process constitutes, being provided with the axis that the shape conformal correspondence in mould shape chamber (3) manufactures and designs in fine and close filling block (2) is the mould conformal cooling pipe (4) of space three-dimensional curve, and fine and close filling block (2) casts in the mould outline housing (1).
2, a kind of mould structure with conformal cooling pipe according to claim 1 is characterized in that: described mould conformal cooling pipe (4) is arranged in the mould structure after being shaped for the moulding canal curvature.
3, a kind of mould structure with conformal cooling pipe according to claim 1 and 2 is characterized in that: described mould outline housing (1) adopts the selective laser method of melt-molding by single metal alloy or the moulding of metallic element composite powder.
4, a kind of mould structure with conformal cooling pipe according to claim 1 and 2, it is characterized in that: described conformal cooling pipe (4) is the irregular network structure that is interconnected.
5, a kind of mould structure with conformal cooling pipe according to claim 4 is characterized in that: described conformal cooling pipe (4) is a copper pipe.
CN200910108920A 2009-07-20 2009-07-20 Mould structure with conformal cooling pipe CN101670627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910108920A CN101670627A (en) 2009-07-20 2009-07-20 Mould structure with conformal cooling pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910108920A CN101670627A (en) 2009-07-20 2009-07-20 Mould structure with conformal cooling pipe

Publications (1)

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CN101670627A true CN101670627A (en) 2010-03-17

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102555174A (en) * 2011-12-06 2012-07-11 深圳创维-Rgb电子有限公司 Die cooling structure and die
CN102632590A (en) * 2012-04-05 2012-08-15 广东步步高电子工业有限公司 Insert forming mould and insert forming method
CN103212695A (en) * 2013-04-16 2013-07-24 华南理工大学 Metal-3D (Three-Dimensional)-printing-based novel composite casting method for dissimilar materials
CN103409714A (en) * 2013-07-16 2013-11-27 香港生产力促进局 Manufacturing method of die of built-in conformal cooling water channel
CN103587005A (en) * 2013-11-12 2014-02-19 华中科技大学 Maze conformal cooling method and structure of mold
CN106077651A (en) * 2016-05-11 2016-11-09 宁海县大雅精密机械有限公司 The part preparation method of built-in pore passage structure
TWI622477B (en) * 2014-05-28 2018-05-01 劉忠男 Method for forming a cooling system of rapid heating mould
CN108179295A (en) * 2017-12-28 2018-06-19 华中科技大学 A kind of method for fast mfg of enhanced conformal cooling mold copper
CN108480821A (en) * 2018-03-27 2018-09-04 福州大学 A kind of electric arc increasing material manufacturing method of circular cross-section follow-cooling passageway
CN108788096A (en) * 2017-04-27 2018-11-13 香港生产力促进局 The mold and its manufacturing method with conformal cooling water route based on direct metal laser sintering and Founding moldability technology
TWI641469B (en) * 2014-05-28 2018-11-21 劉忠男 Method for forming a cooling system of rapid heating mould
TWI641470B (en) * 2014-05-28 2018-11-21 劉忠男 Method for forming a cooling system of rapid heating mould

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102555174B (en) * 2011-12-06 2014-11-19 深圳创维-Rgb电子有限公司 Die cooling structure and die
CN102555174A (en) * 2011-12-06 2012-07-11 深圳创维-Rgb电子有限公司 Die cooling structure and die
CN102632590A (en) * 2012-04-05 2012-08-15 广东步步高电子工业有限公司 Insert forming mould and insert forming method
CN102632590B (en) * 2012-04-05 2014-09-03 广东步步高电子工业有限公司 Insert forming mould and insert forming method
CN103212695A (en) * 2013-04-16 2013-07-24 华南理工大学 Metal-3D (Three-Dimensional)-printing-based novel composite casting method for dissimilar materials
CN103409714A (en) * 2013-07-16 2013-11-27 香港生产力促进局 Manufacturing method of die of built-in conformal cooling water channel
CN103409714B (en) * 2013-07-16 2015-09-23 香港生产力促进局 A kind of making method of mould of built-in conformal cooling water route
CN103587005A (en) * 2013-11-12 2014-02-19 华中科技大学 Maze conformal cooling method and structure of mold
TWI641469B (en) * 2014-05-28 2018-11-21 劉忠男 Method for forming a cooling system of rapid heating mould
TWI622477B (en) * 2014-05-28 2018-05-01 劉忠男 Method for forming a cooling system of rapid heating mould
TWI641470B (en) * 2014-05-28 2018-11-21 劉忠男 Method for forming a cooling system of rapid heating mould
CN106077651A (en) * 2016-05-11 2016-11-09 宁海县大雅精密机械有限公司 The part preparation method of built-in pore passage structure
CN108788096A (en) * 2017-04-27 2018-11-13 香港生产力促进局 The mold and its manufacturing method with conformal cooling water route based on direct metal laser sintering and Founding moldability technology
CN108179295A (en) * 2017-12-28 2018-06-19 华中科技大学 A kind of method for fast mfg of enhanced conformal cooling mold copper
CN108179295B (en) * 2017-12-28 2019-08-30 华中科技大学 A kind of method for fast mfg of enhanced conformal cooling mold copper
CN108480821A (en) * 2018-03-27 2018-09-04 福州大学 A kind of electric arc increasing material manufacturing method of circular cross-section follow-cooling passageway
CN108480821B (en) * 2018-03-27 2019-10-15 福州大学 A kind of electric arc increasing material manufacturing method of circular cross-section follow-cooling passageway

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